Editing Astronomical transit (section)

=== HATNet ===
[[HATNet Project]] is a set of northern telescopes in [[Fred Lawrence Whipple Observatory]], Arizona and [[Mauna Kea Observatories]], HI, and southern telescopes around the globe, in Africa, Australia, and South America, under the HATSouth branch of the project.<ref>{{Cite web|url=https://hatnet.org/|title=The HATNet Exoplanet Survey|website=hatnet.org|date = 2018|publisher = Princeton University}}</ref> These are small aperture telescopes, just like KELT, and look at a wide field which allows them to scan a large area of the sky for possible transiting planets. In addition, their multitude and spread around the world allows for 24/7 observation of the sky so that more short-period transits can be caught.<ref>{{Cite web|url=https://hatsurveys.org/|title=The HAT Exoplanet Surveys|website=hatsurveys.org|access-date=2018-12-16|archive-date=25 September 2021|archive-url=https://web.archive.org/web/20210925064147/https://hatsurveys.org/|url-status=dead}}</ref>

A third sub-project, HATPI, is currently under construction and will survey most of the night sky seen from its location in Chile.<ref>{{Cite web|url=https://hatpi.org/|title=The HATPI Project|website=hatpi.org|access-date=2018-12-16}}</ref>